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arXiv 0709.3227hep-thgr-qcmath-phmath.MP
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乘积流形上量子场的格林函数与降维

Green functions and dimensional reduction of quantum fields on product manifolds

Z. Haba

摘要:

本文讨论乘积流形P=NxM上的欧氏格林函数.我们证明了如果M是紧的,则P上的欧氏场可以用它的零模来近似,它是N上的欧氏场。我们估计这个近似的余数。我们表明,对于大的距离N的其余部分是小的。如果P=R^{D-1}xS^{beta},其中S^{beta}是半径为beta的圆,则结果简化为众所周知的D维有限温度量子场论在高温极限下的D-1维近似。简要讨论了欧氏域的解析延拓。

英文摘要:

We discuss Euclidean Green functions on product manifolds P=NxM. We show that if M is compact then the Euclidean field on P can be approximated by its zero mode which is a Euclidean field on N. We estimate the remainder of this approximation. We show that for large distances on N the remainder is small. If P=R^{D-1}xS^{beta}, where S^{beta} is a circle of radius beta, then the result reduces to the well-known approximation of the D dimensional finite temperature quantum field theory to D-1 dimensional one in the high temperature limit. Analytic continuation of Euclidean fields is discussed briefly.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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